Pramine fossils of Alethopteris, Sigillaria and Calamites and study Figure 9. Compare these fossi...
Pramine fossils of Alethopteris, Sigillaria and Calamites and study Figure 9. Compare these fossils to the specimens of extant lycophytes and horsetails you observed in this lab. Look for dichotomous (forked) branching, similar shape of leaves, shape and texture of stems and sporangia. Sketch each fossil showing these characteristics. Alethopteris Procedure: Calamites Sigillaria CopynghtO 2005 Pearson Education Inc Publishing as Parson Benjamin Cummings All rights eseved Figure 9 Carboniferous forest as understood from fossil record. Most large trees with straight trunks are lycophytes. Large tree on left with feathery branches is horsetail.
Pramine fossils of Alethopteris, Sigillaria and Calamites and study Figure 9. Compare these fossils to the specimens of extant lycophytes and horsetails you observed in this lab. Look for dichotomous (forked) branching, similar shape of leaves, shape and texture of stems and sporangia. Sketch each fossil showing these characteristics. Alethopteris Procedure: Calamites Sigillaria CopynghtO 2005 Pearson Education Inc Publishing as Parson Benjamin Cummings All rights eseved Figure 9 Carboniferous forest as understood from fossil record. Most large trees with straight trunks are lycophytes. Large tree on left with feathery branches is horsetail.